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(No Model.) 4 Sheets-Sheet 1. W. M. FERRY.

STEAM BOILER.

No. 341,564. Pate Mayll, 1886.

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N, PETERS. Phum-Lilhographur, \qnrm zm D. c.

(No Model.) 4 Sheets-Sheet a. W. M. PERRY.

STEAM BOILER. No. 341,564. Patented May 11, 1886.

f, WV MQ G (No Model.) 4 Sheets-Sheet 4. W. M. PERRY.

STEAM BOILER.

Patented May 11, 1886.

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NY PETERS PhnXn-Ldhogmpher. Washington. 0. c.

UNITED STATES PATENT OFFICE.

IVILLIAM MONTAGUE FERRY, OF PARK CITY, UTAH TERRITORY.

STEAM-BOILER.

FEPJECIFICATION forming part of Letters Patent No. 341,564, dated May 11, 1886.

Application filed March 9, 1886. Serial No. 194,611. (No model.)

To (ZZZ whom, it 11mg concern.

Be it known that I, WILLIAM MONTAGUE FERRY, a citizen of the United States, residing at Park City, in the county of Summit and Territory of Utah, have invented certain new and useful Improvements in Steam-Boilers,

and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make. and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked theron, which form a part of this specification.

The object of my invention is to facilitate the circulation and heating of the feed-water, resulting in an economy of fuel; to effect the settling of the solid elements of the water before reaching the boiler, thus preventing scale; to readily blow off such settlings as they form from the various tubes and other parts individual ly; to eff ectthe opening into and clearing out of the mud-drum at any time without losing steam or water from the boiler by the latter operation; to clear out the ash-pit of the furnace to enable the interior of the circulating-tubes and other parts to be readily examined. The attainment of these objects enables water containing considerable sediment or lime to be used and steam to be kept up with safety for a long time, as is often necessary in silver and quartz mills, smelters, and other employments of boilers, thus obviating the necessity and cost of erecting additional batteries of boilers for alternate use.

-My invention consists in certain combinations of parts to effect the above objects, and in certain other details hereinafter set forth.

The invention can best be understood by reference to the accompanying drawings, in which I have shown a means for carrying it into effect. I

In said drawings, Figure 1 is a longitudinal section of a furnace, boiler, and other parts embodying my invention. Fig. 2 is a plan View of a portion of the same. Fig. 3 is a front elevation. Fig. 4 is a rear elevation. Fig. 5 is a transverse vertical section. Fig. 6 is a similar section of the water-back. Fig. 7 is a longitudinal vertical section of the water-back. Fig. 8 is a sectional view of a checkvalve which I employ. Fig. 9 isa longitudinal section of a portion of the circulating pipes.

Referring to the drawings, A represents a steam-boiler of a well-known form provided B is the furnace-grate, and G the ash-pit. The latter is of hopper form, as indicated by the dotted line 0 in Fig. 1, and adapted to collect the ashes in an inclined duct, 0. (Shown in Figs. 1 and 3.) I do not, however, claim, broadly, this'form of ash-pit.

The furnace and boiler are inclosed by walls 0, which contain and direct the products of combustion around the boiler. \Vithin said walls and at each side of the boiler is arranged a series of longitudinal pipes, D, of any desired number, opening at their front ends into standpipes E and at their rear ends into the boiler directly, or through a water-back, F. The latter arrangement is preferred, though said water-back is not essential to my system of feed-water circulation.

At the front of the boiler, preferably within the ash-pit, is a mud-drum, G, (shown in end elevation in Fig. 1, and indicated in dotted lines in Fig. 3,) into which the feed-water, either cold or partially heated, is forced from a supply-pipe, g. This drum is the first settling-place for the impurities of the water. It is provided with blow-off cocks directed into the ash-pit, and operated from the outside of the furnace by handles 9. (Shown in Fig. 3.) The regular method of clearing the ash-pit is by blowing off from the drum G, feed-water from the pipe 9 being used, and the necessity for frequently clearing the pit will result in keeping said drum comparatively clean, thus disposing at the outset of a considerable part of the solids contained in the water.

is a hand-hole through which the drum may be cleaned whenever necessary.

The water is conducted from the top of the drum G through pipes g to the stand-pipes E, alrtady mentioned, from which it passes through the pipes D. In the latter pipes, which are exposed to direct contact with the products of combustion, the temperature of the water is considerably raised.

Recurring to the mud-drum G, it will be observed that there is no ChGk-V2tlV, as usual,

between said drum and the water-supply, but

that such a valve (shown at e) is interposed between the drum and each of the stand-pipes E. By this arrangement the frequent blowing off of the mud-drum does not draw upon the boiler, but is effected by the supply through pipe 9. The check-valves e are provided with adjusting-screws e, by which they may be held open to permit of a back flow to blow off the pipes D and stand-pipes E. The standpipesE are connected with the boiler at its forward end, and the pipes D being connected with its rearend there results an effective and constant circulation throughout said pipes and boiler.

In Fig. 8 there is shown, on an enlarged scale, the'valve and connections between the stand-pipes and boiler. I I are ducts leading from the stand-pipes to the lower part of the boiler, and I I are check-valves in said ducts, each of which valves is normally held open by its own weight and by a spring, 17, the tension of which may be regulated by a nut, t. Said valve is adapted to close automatically under the action of a strong current from the pipe E, such as would be caused by the entrance of fresh feed-water through the pipes 9 Such water, therefore, is compelled to pass first through the pipes D. As soon as sufficient water has been admitted the valves 1 I open and the circulation mentioned recommences. The valves may be closed at will by handles iflwhen it is desired to clean the tubes D or blow off either the tubes or stand-pipes.

The water-back F, (see Figs. 2, 6, and 7,) through which, in the construction shown, the water from the pipes D passes before entering the boiler, is curved on its inner face to receive the full impact of the flames and turn the products of combustion forward through the tiretubes, such products escaping through a chimney flue at any desired point, preferably near the forward end of the boiler.

At f f 3 the water-back is provided with partitions. which turn the water issuing from the pipes D downward and compel it to pass first to the bottom of the water-back. Thence it rises and enters the boiler through pipes f*.

In the watcr-baek the wateris highly heated, with the effect of causing the separation and precipitation of its impurities. The lower part of this reservoir is therefore provided with means for disposing of such solids by an opening,f, into the mud-drum H, and by blowoffpipes f f. (See Fig. 4.) The water'back is also connected wit-h the boiler above the water-line by pipes f through which the steam generated in the former may pass freely to the latter and permit the admission of water into the lower portion of the water-back. This escape for the steam tends to prevent the foaming or priming of the water in the waterback.

Atf f are shown hand-holes for cleaning the interior of the water-back.

The mud-drum is connected with the blowoff pipe J, into which its contents may be delivered at will. It communicates with the boiler by a pipe, a.

At the rear of the pipes D, I have provided them with extensions and branches D D", terminating in standpipes E E", which standpipes connect at their lower ends with a blowoff pipe, J, into which the mud-drum H also opens. There beinglittle movement ofwater in said extensions and branches D D a considerable portion of the solid matters in the water not yet disposed of will here have opportunity to settle, and can, as often as desired. be blown out through the stand-pipes E E and pipe J. It will be noticed that the pipes D D D are so arranged that by removing plugs K in the stand-pipes and the valves in the ends of the circulating-pipes clear openings from end to end and through the waterback can be had for inspection and cleaning.

I will now proceed to describe an arrangement ofvalves by which the whole force of the boiler may be concentrated upon any one of the circulating-tubes to blow it off. L is a series of valves at the forward ends of pipes D, and adapted to close the communication of said pipes with the stand-pipes E. Said valves are usually open; but if they be all closed, if the lower ends of said stand-pipes be placed in communication with the mud-drum G, and if the valves L are then opened and closed one at a time, the pipes D will be rapidly cleaned by a very forcible flow of water. At the outer ends of the pipes D and D valves L L are provided, by which said pipes may be similarly cleaned at Will.

Referring to Fig. 9, I will describe the means which I have devised for permitting the longitudinal expansion of the pipes D and the construction of the valves L. M are extensions of the tube D, made, preferably, of brass, which pass into the stand-pipes E through stuffingboxes m, also of a non-corrosive metal. The tubes M are capable of longitudinal motion in thestuffing-boxes, thus accommodating the expansion of tube D. The ends of the tube M within the stand-pipe E are covered with rotary caps m adapted to be operated by a handle attached to a stem, m which passes to the outside of the stand-pipe. The tube M and the caps m are provided with lateral apertures, which may be caused to register or not, accordingly as it is desired to open or close communication between the pipes D and stand-pipes E. The parts last described constitute the valves L, already referred to.

My invention above described is capable of use in most situations where a boiler is required.

When used on shipboard, certain slight and obvious modifications in the form illustrated will be made to adapt my invention to such use.

A water-jacket may take the place of tubes D and the other parts of my invention made use of, though I prefer the arrangement shown; also, I do not limit myself to any particular ICC number of tubes D. A single tube of proper size may be employed. I have therefore applied the term water-heater to such tubes collectively.

It will be understood that my system of water heating and circulation may be easily applied to most boilers now in use.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is

1. The combinatiomwith asteam-boiler and the ash-pit, of a mud-drum, and blow-oft" pipes delivering from said drum into the ash-pit, substantially as set forth.

2. The combination, with asteam-boiler and the ash-pit, of a mud-drum situated beneath the grate and within the pit, and blow-off pipes from said drum adapted to clear the pit of ashes, substantially as set forth.

3, The combination, with a steam-boiler, of a mud-drum, awater-supply pipe, heating and circulating pipes leading from the drum, and a check-valy'e between said pipes and drum, substantially as set forth.

4. The combination, with a steam-boiler, of a mud-drum, a water-supp] y pipe, heating and circulating pipes leading from the drum, a check-valve between said pipes and drum, and means for holding said valve open to permit the blowing off of the pipes, substantially as set forth.

5. The combination, with a boiler and furnace-walls, of a water-back at the end of the boiler and a water-heater at the side of the same, both within said walls and communicating with each other, connections between the water-back and boiler, and blow-off devices for clearing the heater, substantially as set forth.

6. The combination, with a boiler and furnace-walls, of a water-back at the end of the boiler and a water-heater at the side of the same, both within said walls and communicating with each other, connections between the water-back and boiler, and blow-off devices for cleaning the heater, said heater having a still-water or settling extension beyond its lateral communication with the water back, substantially as set forth.

7. The combination, with a boiler, of a water-heater at the side of the same, water-supplying devices at the forward end of said heater, and water-connections leading from the heater forward of its rear end, thus leaving a still-water or settling space, said connections communicating directly or indirectly with the boiler, and the heater beyond said connections being normally closed at the end to prevent circulation in said settling-space, substantially as set forth.

8. The eombinatiomwith a boiler, of a series of heating and circulating tubes, a stand-pipe into which said tubes extend, and valves for blowing ofi' each tube separately into the standpipe, substantially as set forth.

9. The combination, with a boiler, of a series of heating and circulating tubes, a standpipe into which said tubes extend, with a sliding joint to admit of expansion, and valves also arranged to admit of said expansion for blowing off each tube separately into the stand} pipe, substantially as set forth.

10. The combination, with a boiler, of a water-heater or heaters at the side thereof communicating with the rear of the boiler below the water-line, a watersupply pipe communicating with the forward end of said heater, a circulating-pipe from the front of the boiler to the forward end of the heater, and

an automatic check and flow valve in said circulating-pipe, substantially as set forth.

11. The combination, with the water-back, wedge-shaped or narrowed at its lower edge, and adapted to concentrate the sediment, of blow-off pipes extending from the sides of the water-back, substantially in line with the place of collection of the sediment, as set forth.

12. The combination, with the water-back. wedge-shaped at its lower edge, of blow-off pipes extending from the side of the waterback, substantially in line with the place of collection of the sediment, and a mud-drum below and opening into the middle of the lower edge of the watcr-back to take all or a part of the sediment from the middle of the water-back, and which is not carried into the blow-off pipes, as set forth.

13. The combination, with a water-back adapted to receive feed-water at its sides, of

vertical partitions near the sides of the waterback arranged to deflect said water downward to the bottom of the water-back 011 its first entrance, and blowoff pipes, substantially as set forth.

14. The combination, with a boiler, of a waterback at the rear thereof and connected therewith, water-supplying pipes, anda muddrum below and having openings into the bottom of said boiler and water-back, substantially as set forth.

15. The combination, with the circulatingtubes D and a stand-pipe, of the extensions M, of non-corrosive metal, entering and longi tudinally movable in the stand-pipe, substantially as set forth.

In testimony whereof I affix mysignature in presence of two witnesses.

\VILLIAM MONTAGUE FERRY.

Vitnesses:

JAMES T. KESCEL. J runes Morrnr.

IIO 

